suprameatal

Between the posterior wall of the external acoustic meatus and the posterior root of the zygomatic process is the area called the suprameatal triangle (Macewen), or mastoid fossa, through which an instrument may be pushed into the tympanic antrum.

II. Osteology. 5a. 4. The Temporal Bone 1918

The small triangular area between the posterior root of the zygomatic arch and the postero-superior part of the orifice is termed the suprameatal triangle, on the anterior border of which a small spinous process, the suprameatal spine, is sometimes seen.

II. Osteology. 5c. The Exterior of the Skull 1918

—The site of the tympanic antrum is indicated by the suprameatal triangle (Fig. 1209).

XII. Surface Anatomy and Surface Markings. 2. Surface Markings of Special Regions of the Head and Neck 1918

Its inner end is closed, in the recent state, by the tympanic membrane; the upper limit of its outer orifice is formed by the posterior root of the zygomatic process, immediately below which there is sometimes seen a small spine, the suprameatal spine, situated at the upper and posterior part of the orifice.

II. Osteology. 5a. 4. The Temporal Bone 1918